/*
 * Copyright (c) 2010, okazoh_tk. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  - Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  - Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  - Neither the name of the copyright holder nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "alkes/tree3d/Layer3D.h"
#include "alkes/tree3d/Screen3D.h"

namespace alkes {

Layer3D::Layer3D(Context3D* context)
: Layer(context)
{
}

Layer3D::~Layer3D()
{
}

bool Layer3D::onPreRender(GraphicsContext& gc, Iterator& reverse_iter)
{
    IRenderTarget3D* target = gc.getRenderTarget3D();
    if (!target)
        return false; // no target

    bool need_to_render = Clippable::onPreRender(gc, reverse_iter);

    if (need_to_render)
    {
        Rect rect(gc.getCurrentScissorRect());
        target->clearBuffer(AL_BUFFER_DEPTH, Color::TRANS, &rect, -1.0f);

        // set viewport
        UViewport viewport(getRect());
        target->setViewport(viewport);
    }

    return need_to_render;
}

void Layer3D::onPostRender(GraphicsContext& gc, bool rendered_child)
{
    Clippable::onPostRender(gc, rendered_child);
}

bool Layer3D::onBeginRender(GraphicsContext& gc)
{
    IRenderTarget3D* target = gc.getRenderTarget3D();
    if (target)
        target->beginDraw3D();

    return 0 != target;
}

void Layer3D::onEndRender(GraphicsContext& gc)
{
    gc.getRenderTarget3D()->endDraw3D();
}


}
